Using items from the Store

I notice that there are not a lot of options for Carrara users in Daz store items (I kinda don't understand that to begin with but...). I'm interested in the monsters and sci-fi interiors. Is there any way to save those files in a format that I can use in Carrara or am I just screwed?

Alternately, are there any suggestions for getting these kind of sets on other sites? I'm interested in blending live action with set extenders, and in some cases, completely digital sets, with AE cs6.